restconf/restconf-nb/src/main/java/org/opendaylight/restconf/server/mdsal/streams/notif/AbstractNotificationSource.java

   1 /*
   2  * Copyright (c) 2022 PANTHEON.tech, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.restconf.server.mdsal.streams.notif;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.ImmutableMap;
  13 import java.time.Instant;
  14 import org.opendaylight.mdsal.dom.api.DOMEvent;
  15 import org.opendaylight.mdsal.dom.api.DOMNotification;
  16 import org.opendaylight.mdsal.dom.api.DOMNotificationListener;
  17 import org.opendaylight.restconf.server.spi.RestconfStream.EncodingName;
  18 import org.opendaylight.restconf.server.spi.RestconfStream.Sink;
  19 import org.opendaylight.restconf.server.spi.RestconfStream.Source;
  20 import org.opendaylight.yangtools.yang.model.api.EffectiveModelContextProvider;
  21
  22 /**
  23  * Abstract base class for functionality shared between {@link DOMNotification}-based sources.
  24  */
  25 public abstract class AbstractNotificationSource extends Source<DOMNotification> {
  26     protected static final class Listener implements DOMNotificationListener {
  27         private final Sink<DOMNotification> sink;
  28         private final EffectiveModelContextProvider modelContext;
  29
  30         public Listener(final Sink<DOMNotification> sink, final EffectiveModelContextProvider modelContext) {
  31             this.sink = requireNonNull(sink);
  32             this.modelContext = requireNonNull(modelContext);
  33         }
  34
  35         @Override
  36         public void onNotification(final DOMNotification notification) {
  37             sink.publish(modelContext.getEffectiveModelContext(), notification,
  38                 notification instanceof DOMEvent domEvent ? domEvent.getEventInstant() : Instant.now());
  39         }
  40     }
  41
  42     private static final ImmutableMap<EncodingName, NotificationFormatterFactory> ENCODINGS = ImmutableMap.of(
  43         EncodingName.RFC8040_JSON, JSONNotificationFormatter.FACTORY,
  44         EncodingName.RFC8040_XML, XMLNotificationFormatter.FACTORY);
  45
  46     protected AbstractNotificationSource() {
  47         super(ENCODINGS);
  48     }
  49 }